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Reply #246: ah, well... [View All]

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OnTheOtherHand Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Sep-22-11 07:06 PM
Response to Reply #245
246. ah, well...
The reasoning behind "half the collision speed" is just what Greening used for the case of two identical floors in a non-elastic collision: the mass doubles, so the velocity is halved. (If that's too terse, see p. 3 of his "Energy Transfer" paper.) Of course there are multiple reasons why that isn't right in practice. I'm just trying to reconstruct what spooked might think would happen if the two colliding floors are both dislodged, as I think he put it recently.

Even on these assumptions, since the rest of the floors are (by assumption) still headed down at full speed, I don't think that allowing for some 'segmentation' of the momentum will save the towers, although it appears that spooked does.
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